Sun light company produced 40000 bulbs by using the bulbs manufacturing machine during its life. The cost of the machine was OMR 20000 and expected residual value of the machine is OMR2000. If the machine has produced 10000 units , 10500 units, 9500units, 9000 units 1000 units in years 1,2 3,4 and 5 respectively, find out the amount of depreciation to be charged on machine in year 4 by following units of production method. a. OMR 5400 b. OMR 4950 c. OMR 2700 d. OMR 4050